Home / 189,411.29-261,383.75-103,371.98

Finding the Fourth Proportional to 189,411.29, 261,383.75 and 103,371.98

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Solution

The fourth proportional to 189,411.29, 261,383.75 and 103,371.98 is: 142,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,411.29 : 261,383.75 = 103,371.98 : x
  2. Step 2: Convert to fraction form
    189,411.29/261,383.75 = 103,371.98/x
  3. Step 3: Cross multiply
    189,411.29x = 261,383.75 × 103,371.98
  4. Step 4: Simplify right side
    189,411.29x = 27,019,753,953.55
  5. Step 5: Solve for x
    x = 27,019,753,953.55/189,411.29
  6. Step 6: Final answer
    x = 142,651.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.